Document N2ZyqXLQXrQ3LvzLjj9QJydBb
May 5, 1992
Dow U.S.A.
The Dow Chemical Company P 0 Box " 50
Piaouerhi'-e Loo'S.ana 7C765-0'50
Daniel Cortez Eddie Guillory
Petrin Petrin
Building 4106
cc: Wayne Russell Cellulose Building 4501
Asbestos Monitoring
Enclosed are sample results for potential exposure to asbestos.
The OSHA 8-hour permissible exposure limit for asbestos is 0.2 f/cc >5 microns and the 30-minute short term exposure limit is 1 f/cc >5 microns.
The results displayed are based on sampling duration.
The data sheet shows the results of exposure using two methods, the Limit of Detection (LOD) and the Limit of Quantitation (LOQ). Included on the data sheet is an explanation of the method Limit of Quantitation.
Thank you,
Darlene S. Creel Industrial Hygiene Ext. 6181 Building 3502-E
Attachment
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PRODUCED FOR THE ASBESTOS DATABASE
OATS;
____________________
MASTER No. 4^5%! \
DO A 114983 CONFIDENTIAL
ASBESTOS MONITORING DATA RESULTS; CELLULOSE 1882
"LOD **'LOQ
EXPOSURE GUIDELINES
8-HR. TWA LIMIT - 0.20 FIB/CC 30-MINUTE LIMIT = 1.0 FIB/CC LIMIT OF DETECTION = 7 FIB/MM2 LIMIT OF QUANTITATION = 100 FIB/MM2
DATE SAMPLE# PERSONNEL DESCRIPTION
DURdflIM) VQL4L)
4/30/92
13534
*551-17-4410 Insulator: Removing asbestos insulation from an exchange on wash deck - WET METHOD USED
30 76
* The proper protective clothing was worn during the job. North 7700 Respirator with HEPA (liters were worn during the job.
** LOD FIB/CC
0.03
*"LOQ FIB/CC
<0.51
Note: The Limit of Quantitation has been defined as 100 Fibers/MM2 using the minimum fiber loading criteria specified. In the NIOSH analytical method 7400, the stated range of the method is 100 to 1300 Fibers/MM2 filter area. Although samples below this range can be analyzed, the method has not been validated below 100 Fibers/MM2. However, fiie NIOSH method 7400 also establishes the estimated Limit of Detection as 7 Fibers/MM2 (Reference OSHA Std. 1910.1001, Appendix B). Based on this Information, we will establish 100 Fibers/MM2 filter area as our Limit of Quantitation and 7 Fibers/MM2 filter area as our Limit of Detection (which is more representative of the actual fibers present} for asbestos monitoring. We will report both Limit of Quantitation and Limit of Detection.
If only Limit of Quantitation were expressed, the minimum reportable result would calculate to be 0.04 Fibers per cc for an 8-hr. Time weighted average sample at a flow rate of 2 liters per minute and 0.6 fibers per cc for a 30 minute time weighted average short term sample at a flow rate of 2 liters per minute.
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LOUISIANA DIVISION INDUSTRIAL HYGIENE SAMPLE RECORD
SAMPLE NS 1 3534
PLANT/DEPT. ____ MONITORING FOR:_
DATE t-bfO'fo OTHER CHEMICALS PRESENT:.
SAMPLE COLLECTION MEDIA:
BADGE NO.____
TYPE.
TEMP/HUMIDITY: (REQUIRED FOR BADGES).
CHARCOAL TUBE SIZE_________________
""FILTER CASSETTE SIZE
SILICA TUBE
SIZE__________________
DRAGERTUBE TYPE_________________
OTHER __________________________________
SHIFT: (TThR. 12 HR. ""PERSONNEL SAMPLE FULL SHIFT TWA STEl/TASK
AREA SAMPLE
EMPLOYEE NAME___ -
EMPLOYEE I.D.# <~S" I
JOB CLASSIFICATION___ IH JOB CODE #_________ CONTRACTOR COMPANY _
RESPIRATOR USED? O^ES NO
LvllwiRESPIRATOR MODEL / CANISTER TYPE %o^Ai'7QO
MOUTH-BIT
DUST
"H"AhLaFl-fF-fAaCcEe
/
FULL-FACE
AIR-LINE SC BA
DESCRIPTION OF AREA SAMPLED/JOB PERFORMED DURING MONITORING
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~
PUMP SERIAL NO. CALIBRATION DEVICE:
1
BUBBLEMETER OTHER________
ROTAMETER
PUMP FLOW RATE CALIBRATION:
BEGIN: T.
7 a J~Q>-
3 _ a-
sr03
___
BEGINNING FLOW RATE AVG. 3T O'A&T:C/MIN L/MIN
ENDING:!.
2. > rvJ-
N
2V&U
3.__ 'arosb ENDING FLOW RATE AVG..
0"c/min L/MIN ^
SAMPLE AVERAGE FLOW RATE
i&
TIME STARTED. iL'po ft*
TIME STOPPED.
it.'iQ___ l
TOT. RUNNING TIME(MIN).
~%0 Hum**
Jl1SAMPLE VOLUME (AVG FLOW X RUN TIME).
_______________ ___________________________________
ANALYTICAL REPORT REFERENCE It JO-gimp's
ANALYTICAL RESULTS:
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* RESTRICTED FOR USE WITHIN DOW ONLY *
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